/*
 * Copyright (c) 2005, Swedish Institute of Computer Science
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This file is part of the uIP TCP/IP stack
 *
 */
#ifndef __DHCPC_H__
#define __DHCPC_H__

#include <time.h>

#include "nic.h"
#include "timer.h"
#include "pt.h"
#include "uip.h"

#define STATE_INITIAL         0
#define STATE_SENDING         1
#define STATE_OFFER_RECEIVED  2
#define STATE_CONFIG_RECEIVED 3

struct dhcpc_state {
	struct pt pt;

	nic_t *nic;
	struct uip_stack *ustack;
	char state;
	struct uip_udp_conn *conn;
	struct timer timer;
	u32_t ticks;
	const void *mac_addr;
	int mac_len;

	u8_t serverid[4];

	u16_t lease_time[2];
	u32_t lease_time_nl32;
	u16_t ipaddr[2];
	u16_t netmask[2];
	u16_t dnsaddr[2];
	u16_t default_router[2];

	time_t last_update;
};

struct dhcpc_options {
	u8_t enable_random_xid;
	u8_t xid[4];
};

int dhcpc_init(nic_t *nic, struct uip_stack *ustack,
	       const void *mac_addr, int mac_len);
void dhcpc_request(struct uip_stack *ustack);

void dhcpc_appcall(struct uip_stack *ustack);

void dhcpc_configured(const struct dhcpc_state *s);

#define UIP_UDP_APPCALL dhcpc_appcall

#endif /* __DHCPC_H__ */